用开方法解方程(给详细过程) (1) 3(x-2)^2=0(2) 3(x-1)^2=27(3) 5(x-3)^2-125=0(4) 3(y-1)^2=75

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用开方法解方程(给详细过程)(1)3(x-2)^2=0(2)3(x-1)^2=27(3)5(x-3)^2-125=0(4)3(y-1)^2=75用开方法解方程(给详细过程)(1)3(x-2)^2=0(

用开方法解方程(给详细过程) (1) 3(x-2)^2=0(2) 3(x-1)^2=27(3) 5(x-3)^2-125=0(4) 3(y-1)^2=75
用开方法解方程(给详细过程) (1) 3(x-2)^2=0
(2) 3(x-1)^2=27
(3) 5(x-3)^2-125=0
(4) 3(y-1)^2=75

用开方法解方程(给详细过程) (1) 3(x-2)^2=0(2) 3(x-1)^2=27(3) 5(x-3)^2-125=0(4) 3(y-1)^2=75
3(x-2)²=0
(x-2)²=0
x-2=0
∴x=2

3(x-1)²=27
(x-1)²=9
x-1=±3
∴X1=4
X2=-2

5(x-3)²-125=0
(x-3)²=25
x-3=±5
∴X1=8
X2=-2

3(y-1)²=75
(y-1)²=25
y-1=±5
∴y1=6
y2=-4